CN116326072A

CN116326072A - Communication method and device

Info

Publication number: CN116326072A
Application number: CN202080106288.4A
Authority: CN
Inventors: 宣一荻; 谢信乾; 郭志恒
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-11-02
Filing date: 2020-11-02
Publication date: 2023-06-23
Also published as: WO2022088188A1

Abstract

The application provides a communication method and device, wherein the method comprises the following steps: the network equipment sends a first signaling and a second signaling, wherein the first signaling comprises first indication information for indicating first frequency domain resources and a first MCS, and the first frequency domain resources comprise second frequency domain resources; the second signaling includes second indication information for indicating the second frequency domain resource and a second MCS; the terminal equipment determines to receive a first downlink signal on the first frequency domain resource in a first time period according to the first signaling and the second signaling, wherein the MCS corresponding to the part carried on the second frequency domain resource in the first downlink signal is the second MCS, the MCS corresponding to the part carried on the third frequency domain resource in the first downlink signal is the first MCS or the third MCS, and the third MCS is determined based on the first MCS. Multiple MCS configuration for a single transport block is achieved through at least one signaling.

Description

Communication method and device

Technical Field

The present application relates to the field of communications, and, more particularly, to a method and apparatus for communications.

Background

In the current new access technology (New Radio Access Technology, NR) system, in the propagation process of a wireless signal, a signal transmitted by a transmitting end propagates through multiple paths such as reflection, refraction, scattering, and the like, and the time when signals propagated by different paths reach a receiving end is different, so that a signal received by the receiving end is distorted compared with a signal transmitted by the transmitting end, that is, a multipath effect is generated. The distortion is caused by the fact that the channel coefficient of the radio channel through which the signal passes during propagation varies in the frequency domain, i.e. the radio channel has a frequency selective fading characteristic. The frequency selective fading characteristics of a wireless channel depend on the environment, and are generally smaller in environments with fewer obstructions or potential reflections. And the fixed wireless access (Fixed Wireless Access, FWA) network based on long term evolution (Long term evolution, LTE) and NR technology, especially in indoor fixed wireless access scenario, because of more indoor obstacles and serious multipath effect, the wireless channel has strong frequency selective fading.

The wireless communication system adopts a frequency selection scheduling mode to overcome the frequency selection fading characteristic of a wireless channel, namely, resource Blocks (RBs) with better channel quality are scheduled for communication between network equipment and terminal equipment, so that the frequency selection channel gain of the channel is obtained.

In the prior art, a single transmission block corresponding to a resource block scheduled by a network device only corresponds to one modulation and coding strategy (Modulation and Coding Scheme, MCS), and at this time, the frequency selective fading characteristics of a wireless channel cannot be matched, so that the transmission performance is reduced.

Disclosure of Invention

The application provides a communication method and device, which realize multi-MCS configuration of a single transmission block through at least one signaling.

A first aspect provides a method of communication, the method comprising: receiving first signaling, wherein the first signaling comprises first indication information for indicating first frequency domain resources and a first Modulation and Coding Strategy (MCS); receiving second signaling, the second signaling including second indication information for indicating the second frequency domain resource and a second MCS, the first frequency domain resource including a second frequency domain resource; and determining to receive a first downlink signal on the first frequency domain resource in a first time period according to the first signaling and the second signaling, wherein the MCS corresponding to the part carried on the second frequency domain resource in the first downlink signal is the second MCS, the MCS corresponding to the part carried on a third frequency domain resource in the first downlink signal is the first MCS or the third MCS, the third frequency domain resource is a frequency domain resource which does not comprise the second frequency domain resource in the first frequency domain resource, and the third MCS is determined based on the first MCS.

Based on the above technical solution, three frequency domain resources and at least two MCSs are indicated by two-stage signaling, so that multi-MCS configuration for a single transport block is realized, and since the second frequency domain resource is a part of the first frequency domain resource, the field size indicating the second frequency domain resource in the second signaling is reduced, and the saved field can be used for indicating the third MCS.

With reference to the first aspect, in certain implementations of the first aspect, the third MCS is determined based on the first MCS and a first MCS offset value, the first MCS offset value being carried in the second signaling.

Based on the technical scheme, three frequency domain resources and three MCSs are indicated through two-stage signaling, signaling overhead is saved, and complexity and power consumption for detecting the frequency domain resources and the MCS indication information by the terminal equipment are reduced.

Based on the technical scheme, the first MCS deviation value is directly indicated through the second signaling, and the third MCS is directly determined according to the relation between the first MCS deviation value and the first MCS, so that the multi-MCS configuration of a single transport block is realized.

With reference to the first aspect, in some implementations of the first aspect, the first signaling is configured to indicate that the second downlink signal is received in a second time period, and the second signaling further includes third indication information configured to indicate the first time period; the second time period includes the first time period, and the signal carried by the second downlink signal in the first time period is the first downlink signal.

With reference to the first aspect, in certain implementations of the first aspect, the second signaling is used to indicate that the first downlink signal is received within a first period of time.

With reference to the first aspect, in certain implementations of the first aspect, the first signaling further includes fourth indication information for indicating a second time period, where the second time period includes the first time period.

With reference to the first aspect, in some implementations of the first aspect, the first signaling is carried in a physical downlink shared channel PDSCH, and the second signaling is carried in a physical downlink control channel PDCCH.

With reference to the first aspect, in certain implementations of the first aspect, the first signaling and the second signaling are both carried in PDCCH.

With reference to the first aspect, in certain implementations of the first aspect, the first signaling and the second signaling are the same signaling.

A second aspect provides a method of communication, the method comprising: transmitting a first signaling including first indication information for indicating a first frequency domain resource and a first MCS; and transmitting a second signaling, where the second signaling includes second indication information for indicating the second frequency domain resource and a second MCS, where the first frequency domain resource includes a second frequency domain resource, the second MCS is an MCS corresponding to a portion of the first downlink signal that is carried on the second frequency domain resource, an MCS corresponding to a portion of the first downlink signal that is carried on a third frequency domain resource is the first MCS or a third MCS, and the third frequency domain resource is a frequency domain resource that does not include the second frequency domain resource in the first frequency domain resource, and the third MCS is determined based on the first MCS.

Based on the above technical solution, three frequency domain resources and at least two MCSs are indicated by two-stage signaling, so that multi-MCS configuration for a single transport block is realized, and since the second frequency domain resource is a part of the first frequency domain resource, the field size indicating the second frequency domain resource in the second signaling is reduced, and the saved field can be used for third MCS indication.

With reference to the second aspect, in certain implementations of the second aspect, the third MCS is determined based on the first MCS and a first MCS offset value, the first MCS offset value being carried in the second signaling.

With reference to the second aspect, in some implementations of the second aspect, the first signaling is configured to indicate that the second downlink signal is received in a second time period, and the second signaling further includes third indication information configured to indicate the first time period; the second time period includes the first time period, and the signal carried by the second downlink signal in the first time period is the first downlink signal.

With reference to the second aspect, in certain implementations of the second aspect, the second signaling is used to indicate that the first downlink signal is received within a first period of time.

With reference to the second aspect, in certain implementations of the second aspect, the first signaling further includes fourth indication information for indicating a second time period, where the second time period includes the first time period.

With reference to the second aspect, in some implementations of the second aspect, the first signaling is carried in PDSCH and the second signaling is carried in PDCCH.

With reference to the second aspect, in some implementations of the second aspect, the first signaling and the second signaling are carried in PDCCH.

With reference to the second aspect, in some implementations of the second aspect, the first signaling and the second signaling are the same signaling.

A third aspect provides a communication apparatus, the communication apparatus being a terminal device or a module configured (or for) a terminal device, comprising: the device comprises a transceiver unit and a processing unit, wherein the transceiver unit is used for receiving a first signaling and a second signaling, the first signaling comprises first indication information for indicating first frequency domain resources and a first Modulation and Coding Strategy (MCS), and the first frequency domain resources comprise second frequency domain resources; the second signaling includes second indication information for indicating the second frequency domain resource and a second MCS; the processing unit is configured to determine, according to the first signaling and the second signaling, to receive a first downlink signal on the first frequency domain resource in a first time period, where an MCS corresponding to a portion of the first downlink signal that is carried on the second frequency domain resource is the second MCS, an MCS corresponding to a portion of the first downlink signal that is carried on a third frequency domain resource is the first MCS or a third MCS, and the third frequency domain resource is a frequency domain resource that does not include the second frequency domain resource in the first frequency domain resource, and the third MCS is determined based on the first MCS.

Based on the technical scheme, the terminal equipment determines three frequency domain resources and at least two MCSs by receiving the two-stage signaling, and realizes the multi-MCS configuration of a single transmission block.

A fourth aspect provides a communications apparatus, the communications apparatus being a network device or a module configured (or for) a network device, comprising: a transceiver unit for transmitting a first signaling and a second signaling, the first signaling including first indication information for indicating a first frequency domain resource and a first MCS, the first frequency domain resource including a second frequency domain resource; the second signaling includes second indication information for indicating the second frequency domain resource and a second MCS, where the second MCS is an MCS corresponding to a portion of the first downlink signal that is carried on the second frequency domain resource, and an MCS corresponding to a portion of the first downlink signal that is carried on a third frequency domain resource is the first MCS or a third MCS, and the third frequency domain resource is a frequency domain resource that does not include the second frequency domain resource in the first frequency domain resource, and the third MCS is determined based on the first MCS.

Based on the above technical solution, the network device indicates three frequency domain resources and at least two MCSs by sending two-stage signaling, so as to implement multi-MCS configuration for a single transport block, and since the second frequency domain resource is a part of the first frequency domain resource, the field size indicating the second frequency domain resource in the second signaling is reduced, and the saved field can be used for third MCS indication.

In a fifth aspect, a communication apparatus is provided, which may be the terminal device in the first aspect described above, or an electronic device configured in the terminal device, or a larger device including the terminal device. The apparatus is configured to perform the communication method provided in the first aspect. The communication apparatus includes a transceiver to receive first signaling including first indication information to indicate a first frequency domain resource and a first modulation and coding scheme, MCS, and a second signaling including a second frequency domain resource; the second signaling includes second indication information for indicating the second frequency domain resource and a second MCS; the processor is configured to determine, according to the first signaling and the second signaling, to receive a first downlink signal on the first frequency domain resource in a first period, where an MCS corresponding to a portion of the first downlink signal that is carried on the second frequency domain resource is the second MCS, an MCS corresponding to a portion of the first downlink signal that is carried on a third frequency domain resource is the first MCS or a third MCS, and the third frequency domain resource is a frequency domain resource that does not include the second frequency domain resource in the first frequency domain resource, and the third MCS is determined based on the first MCS. The processor is coupled to the memory and operable to execute instructions in the memory to implement the communication method of the first aspect and any one of the possible implementations of the first aspect. Optionally, the communication device further comprises a memory. Optionally, the communication device further comprises a communication interface, and the processor is coupled to the communication interface.

In one implementation, the communication interface may be a transceiver, or an input/output interface.

In another implementation, the communication device is a chip configured in the terminal device. When the communication device is a chip configured in a terminal device, the communication interface may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin, or related circuits on the chip or a system of chips, or the like. The processor may also be embodied as processing circuitry or logic circuitry.

In a sixth aspect, a communication apparatus is provided, which may be the network device in the above second aspect, or an electronic device configured in the network device, or a larger device including the network device. The apparatus is for performing the communication method provided in the second aspect described above. The communication apparatus includes a transceiver to transmit first signaling and second signaling, the first signaling including first indication information to indicate a first frequency domain resource and a first MCS, the first frequency domain resource including a second frequency domain resource; the second signaling includes second indication information for indicating the second frequency domain resource and a second MCS, where the second MCS is an MCS corresponding to a portion of the first downlink signal that is carried on the second frequency domain resource, and an MCS corresponding to a portion of the first downlink signal that is carried on a third frequency domain resource is the first MCS or a third MCS, and the third frequency domain resource is a frequency domain resource that does not include the second frequency domain resource in the first frequency domain resource, and the third MCS is determined based on the first MCS. The processor is coupled to the memory and operable to execute instructions in the memory to implement the communication method of the second aspect and any one of the possible implementations of the second aspect. Optionally, the communication device further comprises a memory. Optionally, the communication device further comprises a communication interface, and the processor is coupled to the communication interface.

In another implementation, the communication device is a chip configured in a network device. When the communication device is a chip configured in a network device, the communication interface may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin, or related circuits on the chip or a system of chips, etc. The processor may also be embodied as processing circuitry or logic circuitry.

Alternatively, the transceiver may be a transceiver circuit. Alternatively, the input/output interface may be an input/output circuit.

In a specific implementation process, the processor may be one or more chips, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a flip-flop, various logic circuits, and the like. The input signal received by the input circuit may be, but not limited to, received by and input to the receiver, the output signal output by the output circuit may be, but not limited to, output to and transmitted by the transmitter, and the input circuit and the output circuit may be the same circuit, which functions as the input circuit and the output circuit, respectively, at different times. The embodiments of the present application do not limit the specific implementation manner of the processor and the various circuits.

In a seventh aspect, a computer readable storage medium is provided, on which a computer program is stored which, when executed by a terminal device, causes the terminal device to implement the first aspect and the communication method in any one of the possible implementations of the first aspect.

In an eighth aspect, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a network device, causes the network device to implement the second aspect and the communication method in any one of the possible implementations of the second aspect.

A ninth aspect provides a computer program product comprising instructions which, when executed by a computer, cause a terminal device to implement the first aspect and the communication method in any one of the possible implementations of the first aspect.

In a tenth aspect, there is provided a computer program product comprising instructions which, when executed by a computer, cause a network device to implement the second aspect and the communication method in any one of the possible implementations of the second aspect.

Drawings

Fig. 1 is a schematic diagram of a communication system suitable for use in embodiments of the present application.

Fig. 2 is a schematic flow chart of a communication method suitable for use in embodiments of the present application.

Fig. 3 is a schematic diagram of a frequency domain resource relationship suitable for use in the embodiments of the present application.

Fig. 4 is a schematic diagram of a received signal suitable for use in the embodiments of the present application.

Fig. 5 is a schematic block diagram of a terminal device apparatus suitable for use in the embodiments of the present application.

Fig. 6 is a schematic block diagram of a network device suitable for use in the embodiments of the present application.

Fig. 7 is a schematic architecture diagram of a terminal device suitable for use in the embodiments of the present application.

Fig. 8 is a schematic architecture diagram of a network device suitable for use in the embodiments of the present application.

Detailed Description

The technical solutions in the present application will be described below with reference to the accompanying drawings.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (GlobalSystem Formobile Communications, GSM), code division multiple access (Code Division Multiple Access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) systems, general packet Radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) systems, LTE frequency division duplex (Frequency Division Duplex, FDD) systems, LTE time division duplex (Time Division Duplex, TDD), universal mobile telecommunications system (Universal Mobile Telecommunication System, UMTS), worldwide interoperability for microwave access (Worldwide Interoperability for Microwave Access, wiMAX) communication systems, satellite communication systems, fifth generation (5th generation,5G) systems or New Radio, NR) systems, and future communication systems.

Fig. 1 is a schematic diagram of a wireless communication system 100 suitable for use in embodiments of the present application.

As shown in fig. 1, the wireless communication system 100 may include at least one network device, such as the network device 110 shown in fig. 1. The wireless communication system 100 may also include at least one terminal device, such as the terminal device 120 shown in fig. 1. Wireless connection can be established between the terminal equipment and the network equipment and between the terminal equipment and the terminal equipment for wireless communication, and the sending equipment can indicate the scheduling information of the data through the control information so that the receiving equipment can correctly receive the data according to the control information.

The terminal device in the embodiments of the present application may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User Equipment. The terminal devices in embodiments of the present application may be cell phones, tablet computers, indoor or outdoor customer premises equipment (Customer Premises Equipment, CPE), computers with wireless transceiving functionality, virtual Reality (VR) terminal devices, augmented Reality (Augmented Reality, AR) terminal devices, wireless terminals in industrial control (Industrial Control), wireless terminals in unmanned, wireless terminals in telemedicine, wireless terminals in smart grids, wireless terminals in transportation security, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (Session Initiation Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDA), handheld devices with wireless communication functionality, computing devices or other processing devices connected to wireless modems, vehicle devices, wearable devices, terminal devices in 5G networks or terminal devices in future evolving public land mobile communication networks (Public Land Mobile Network, PLMN), etc.

It should be understood that the present application is not limited to a specific form of terminal device.

The network device in the embodiment of the present application may be any device having a wireless transceiver function. The apparatus includes, but is not limited to: an evolved Node B (eNB), a radio network controller (Radio Network Controller, RNC), a Node B (Node B, NB), a Base station controller (Base Station Controller, BSC), a Base transceiver station (Base Transceiver Station, BTS), a Home Base station (Home evolved NodeB, for example, or a Home Node B, HNB), a Base Band Unit (BBU), an Access Point (AP) in a wireless fidelity (Wireless Fidelity, WIFI) system, a wireless relay Node, a wireless backhaul Node, a transmission Point (transmission Point, TP), or a transmission receiving Point (Transmission and Reception Point, TRP), etc., may also be 5G, such as a gNB in an NR system, or a transmission Point (TRP or TP), one or a group (including a plurality of antenna panels) of Base stations in a 5G system, or may also be a network Node constituting a gNB or a transmission Point, such as a baseband Unit (BBU), or a Distributed Unit (DU), or may also be a future Access Node in a Base station or Wi-Fi system in a mobile communication system, etc.

In some deployments, the gNB may include a Centralized Unit (CU) and DUs. The gNB may also include an active antenna unit (Active Antenna Unit, abbreviated as AAU). The CU implements part of the functionality of the gNB and the DU implements part of the functionality of the gNB. For example, the CU is responsible for handling non-real time protocols and services, implementing the functions of the radio resource control (Radio Resource Control, RRC), packet data convergence layer protocol (Packet Data Convergence Protocol, PDCP) layer. The DUs are responsible for handling physical layer protocols and real-time services, implementing the functions of the radio link control (Radio Link Control, RLC), medium access control (Media Access Control, MAC) and physical layers. The AAU realizes part of physical layer processing function, radio frequency processing and related functions of the active antenna. Since the information of the RRC layer may eventually become information of the PHY layer or be converted from the information of the PHY layer, under this architecture, higher layer signaling, such as RRC layer signaling, may also be considered to be transmitted by the DU or by the du+aau. It is understood that the network device may be a device comprising one or more of a CU node, a DU node, an AAU node. In addition, the CU may be divided into Network devices in an access Network (Radio Access Network, RAN), or may be divided into Network devices in a Core Network (CN), which is not limited in this application.

In order to facilitate understanding of the embodiments of the present application, several terms referred to in the present application are first briefly described below.

1. Sub-carriers

Subcarrier: an orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) system divides a frequency domain resource into several sub-resources, which may be referred to as one subcarrier on each frequency domain. A subcarrier can also be understood as the smallest granularity of a frequency domain resource.

2. Subcarrier spacing

Subcarrier spacing: in an OFDM system, the interval value between the center positions or peak positions of two adjacent subcarriers in the frequency domain. For example, the subcarrier spacing in the LTE system is 15KHz, the subcarrier spacing in the 5G NR system may be 15KHz, or 30KHz, or 60KHz, or 120KHz, etc.

3. OFDM symbol

OFDM symbol: the smallest time unit in the time domain in an OFDM system, which is a communication system employing OFDM transmission, for example, an LTE or NR system.

4. Demodulation reference signal (Demodulation Reference Signal, DMRS)

DMRS: the demodulation reference signal is a reference signal for recovering a received signal, the DMRS is a signal known to a receiving end, and the receiving end can determine fading characteristics of a wireless channel, namely channel coefficients of the wireless channel, according to the received signal and the known DMRS signal, so as to recover the received signal. In the 5G NR system, considering that channel coefficients from different antenna ports to a terminal are different, in order for a receiving end to obtain information transmitted on multiple spatial layers, the channel coefficients between each antenna port and the terminal need to be estimated, so different DMRS need to be configured for each antenna port, and DMRS corresponding to different antenna ports may be multiplexed in a time division, frequency division, code division, or other manner. Currently, a 5G NR system can support a maximum of 12 MDRS ports.

5. Resource Block (RB)

The resource block, N subcarriers consecutive in the frequency domain may be referred to as one resource block. For example, one resource block in the LTE system includes 12 subcarriers, and one resource block in the 5G NR system also includes 12 subcarriers. As the communication system evolves, the number of subcarriers included in one resource block may also be other values. Several resource blocks may form one resource block group (Resource Block Group, RBG), and the number of RBs contained in each RBG may be determined by a resource block Bundling "PRB Bundling" field in the DCI.

6. Frequency domain resources

The frequency domain resource is a Part of frequency band (band) configured by the network device to the terminal device for data transmission, and specifically, the frequency domain resource may be a component carrier (Component Carrier, CC), a Bandwidth Part (BWP), a carrier frequency band, or the like. The embodiment of the present application is not limited to this, and BWP may be a continuous frequency domain resource or a discontinuous frequency domain resource.

7. Time slot (slot)

A slot is a unit of resources for transmitting data in the time domain, and a slot typically contains multiple symbols/chips, each of which may have the same or different transmission directions. One slot of the 5G NR system includes 14 OFDM symbols, and a 15kHz subcarrier interval corresponds to a slot length of 1ms and a 30kHz subcarrier interval corresponds to a slot length of 0.5ms. An OFDM symbol is the smallest time unit in the time domain in an OFDM system.

8. Transmission Block (Transmission Block, TB)

Data is transmitted in transport block units on an uplink data channel (e.g., a physical uplink shared channel) and a downlink data channel (e.g., a physical downlink shared channel), and the size of a TB may be expressed in transport block sizes (Transmit Block Size, TBs) in bits. Currently, in a 5G NR system, a terminal device can simultaneously receive or transmit 2 transport blocks at most.

9. Modulation and coding strategy (Modulation and Coding Scheme, MCS)

The MCS is a modulation and coding strategy corresponding to the modulation order and code rate adopted by a transmission block contained in a downlink signal sent by the network device to the terminal device. The network equipment determines the modulation and coding strategy adopted by the terminal equipment according to the MCS index value received in the DCI and the MCS table indicated by the high-level signaling and determines the modulation order and the code rate adopted by the terminal equipment according to the determined modulation precoding strategy so as to process the downlink signal.

In the 5G NR system, when a network device transmits a data packet to a terminal device, the network device instructs the terminal device to receive downlink data by transmitting downlink control information (Downlink Control Information, DCI) to a terminal user in a physical downlink control channel (Physical Downlink Control Channel, PDCCH).

The DCI indicates a resource block used by a terminal device to receive a downlink signal through a "frequency domain resource allocation (Frequency domain resource assignment) indication" field.

The corresponding MCS contained in the signal received by the terminal device from the above-mentioned resource block is indicated by the MCS index value indicated by the "modulation and coding scheme (Modulation and Code Scheme, MCS) indication" field and the MCS index table indicated by the higher layer signaling.

In the DCI, each transport block corresponds to only one MCS, that is, a single transport block corresponding to a resource block scheduled by a network device corresponds to only one MCS. At this point the frequency selective fading characteristics of the wireless channel cannot be matched. To overcome this problem, the network device needs to configure a plurality of MCSs corresponding to a single transport block carried on the scheduled resource block, and instruct the terminal device to frequency domain resources of the transport block carrying part corresponding to each MCS.

In the embodiment of the present application, to solve the above-mentioned problem, the network device configures a plurality of MCSs for a single transport block by sending one or more signaling, thereby alleviating the frequency selective fading characteristic of the wireless channel.

Fig. 2 is a schematic flow chart of a communication method 200 provided by an embodiment of the application, where the method includes:

S210 the network device sends a first signaling to the terminal device, and correspondingly, the terminal device receives the first signaling, where the first signaling includes first indication information for indicating a first frequency domain resource and a first MCS, and the first frequency domain resource includes a second frequency domain resource.

It should be understood that before the network device sends the first signaling, the state of the channel may be estimated according to the channel sounding reference signal and/or the demodulation reference signal sent by the terminal device, and the scheduled frequency domain resource and the first MCS corresponding to the signal carried on the frequency domain resource are determined according to the channel state, and then the terminal device is indicated by the first signaling. The first frequency domain resource may be a resource block carrying downlink signals to be sent by the network device to the terminal device.

In one embodiment, the first indication information includes 2 fields, a first field for indicating the first frequency domain resource, and a second field for indicating an index value of the first MCS, that is, at this time, the field for indicating the first frequency domain resource and the field of the index value of the first MCS are two different fields. The first field and/or the second field in the first indication information may be an indication field in an existing protocol, a reserved field in the existing protocol, or an undefined newly added field in the existing protocol. For example, if the first signaling is DCI, the first field may be a field of frequency domain resource allocation "Frequency domain resource assignment" in a DCI format defined in protocol 3GPP (3 rd Generation Partnership Project) TS 38.212. The second field may be a field of a modulation and coding strategy "Modulation and coding scheme" in a DCI format defined in the protocol 3gpp TS 38.212, or if the first signaling is RRC signaling, a field for indicating the first frequency domain resource and a field for indicating the first MCS may be added to the RRC signaling.

Optionally, the first signaling may further include fourth indication information for indicating the second period of time. The fourth indication information may indicate a slot offset and start and length indication values (Start and length Indicator Value, SLIV) of the second time period. The SLIV is used to determine a first OFDM symbol and a last OFDM symbol within the second time period. The fourth indication information may be an indication field in the existing protocol, a reserved field in the existing protocol, or an undefined new field in the existing protocol. For example, if the first signaling is DCI, the fourth indication information may be a field in the existing DCI for indicating time domain resource allocation "Time Domain Resource Assignment", and if the first signaling is RRC signaling, a field for indicating the second time period may be added to the RRC signaling. .

In one embodiment, the first signaling may be carried in a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH). For example, the first signaling is RRC signaling, but the first signaling may be other higher layer signaling besides RRC signaling, which is not limited herein.

In another embodiment, the first signaling may also be carried in a physical downlink control channel PDCCH. For example, the first signaling is DCI, however, the first signaling may be other signaling besides DCI, which is not limited herein.

S220 the network device sends a second signaling, and correspondingly, the terminal device receives the second signaling, where the second signaling includes second indication information for indicating a second frequency domain resource and a second MCS, and the first frequency domain resource includes a second frequency domain resource.

Specifically, the second indication information includes 2 fields for indicating the second frequency domain resource and the second MCS, a first field for indicating the second frequency domain resource, and a second field for indicating an index value of the second MCS. The first field and/or the second field in the second indication information may be an indication field in an existing protocol, a reserved field in the existing protocol, or an newly added field undefined in the existing protocol. For example, if the second signaling is DCI, the first field may be a field of frequency domain resource allocation "Frequency domain resource assignment" in a DCI format defined in protocol 3GPP (3 rd Generation Partnership Project) TS 38.212. The second field may be a field of a modulation and coding strategy "Modulation and coding scheme" in the DCI format defined in protocol 3gpp TS 38.212. .

In one embodiment, the first field may indicate the second frequency domain resource by way of a bit map. The bit length of the bit map may be the number of RBs included in the first frequency domain resource. Or the bit length of the bitmap may be the number of RBGs included in the first frequency domain resource, where each bit corresponds to one RB or one RBG, and a different value of each bit characterizes a different state of its corresponding RB or RBG. For example, the value of the bit is set to 1, which indicates that the resource block corresponding to the bit is included in the second frequency domain resource, the value of the bit is set to 0, which indicates that the resource block corresponding to the bit is not included in the second frequency domain resource, and similarly, if the value of the bit is set to 0, which indicates that the resource block corresponding to the bit is included in the second frequency domain resource, if the value of the bit is set to 1, which indicates that the resource block corresponding to the bit is not included in the second frequency domain resource, the present invention is not limited thereto.

For example, as shown in table 1, if the first frequency domain resource contains 8 RBs, numbered RB0-RB7, and if the bitmap is [11110000], it indicates that RB0, RB1, RB2, RB3 are contained in the second frequency domain resource; bitmap [11101000], indicating that RB0, RB1, RB2, RB4 are included in the second frequency domain resource; bitmap [11100100], indicating that RB0, RB1, RB2, RB5 are included in the second frequency domain resource; bitmap [11111000], then indicating that RB0, RB1, RB2, RB3, RB4 are contained in the second frequency domain resource; the bitmap is [11110100], then RB0, RB1, RB2, RB3, RB5 are indicated to be included in the second frequency domain resource.

TABLE 1

Bitmap image	RB number contained in the second frequency domain resource
[11110000]	0,1,2,3
[11101000]	0,1,2,4
[11100100]	0,1,2,5
…	…
[11111000]	0,1,2,3,4
[11110100]	0,1,2,3,5
…	…

In another embodiment, the first field may further indicate the second frequency domain resource by a resource indication value, where the resource indication value indicates a position of a start RB of the second frequency domain resource and the number of consecutive RBs in the first frequency domain resource, for example, the resource indication information indicates that L RBs consecutive from an S-th RB in the first frequency domain resource belong to the second frequency domain resource. The calculation mode of the resource indicated value can adopt the calculation mode of the resource indicated value of the Type 1 frequency domain resource allocation in the protocol 3GPP TS 38.214 standard.

Specifically, in one implementation manner, the second field indicates an index value of the second MCS, and indicates, through higher layer signaling, an MCS index table adopted by the terminal device, and the terminal device may determine the second MCS in the MCS index table indicated by the network device according to the index value of the second MCS.

In another embodiment, the second field may indicate an offset value. The offset value is the difference between the index value of the first MCS and the index value of the second MCS. The terminal device may determine the second MCS based on the offset value and the first MCS.

Optionally, the second signaling may further include third indication information for indicating the first period of time. The first time period is included in the second time period. I.e. the number of slots contained in the first time period is one, more or all of the slots contained in the second time period, or the OFDM symbols contained in the first time period is one, more or all of the OFDM symbols contained in the second time period.

Optionally, the second signaling further includes indication information for indicating the first MCS offset value. Or the second signaling further includes indication information for indicating the third MCS. The first MCS offset value is used to determine an index value of a third MCS. The first MCS offset value is a difference between an index value of the third MCS and an index value of the first MCS. The third MCS is an MCS corresponding to a third frequency domain resource, that is, an MCS corresponding to a frequency domain resource other than the second frequency domain resource in the first frequency domain resource. The third frequency domain resource is a complement of the second frequency domain resource in the first frequency domain resource.

It should be understood that, when the first MCS offset value indicated by the second signaling sent by the network device is zero, or the second signaling does not indicate the third MCS or the first MCS offset value, the terminal device may determine that the MCS adopted by the signal carried on the third frequency domain resource is the first MCS indicated by the first signaling. Whether the particular network device needs to indicate the third MCS or the first MCS offset via the second signaling is not limited herein.

In an embodiment, the field in the second signaling for indicating the first MCS offset value may be located after the field in the second signaling for indicating the second frequency domain resource. Or a field in the second signaling for indicating the third MCS may be located after a field in the second signaling for indicating the second frequency domain resource.

It should be understood that if the second signaling indicates the second frequency domain resource by means of a bit map, the number of bits contained in the bit map is the same as the number of RBs or RBGs contained in the first frequency domain resource block, and because the number of RBs in the first frequency domain resource is smaller than the number of RBs contained in the bandwidth configured by the network device for the terminal device, or the number of RBGs in the first frequency domain resource is smaller than the number of RBGs contained in the bandwidth configured by the network device for the terminal device, the signaling overhead of the second signaling indicating the second frequency domain resource is reduced, and the network device can indicate the third MCS or the first MCS offset value by one or more bits of the bits saved in this way.

In one embodiment, the second signaling may be carried in PDCCH, for example, but not limited to, DCI.

S230, the terminal equipment determines to receive a first downlink signal on the first frequency domain resource in a first time period according to the first signaling and the second signaling, wherein the MCS corresponding to the part carried on the second frequency domain resource in the first downlink signal is a second MCS, the MCS corresponding to the part carried on a third frequency domain resource in the first downlink signal is a first MCS or a third MCS, the third frequency domain resource is a frequency domain resource which does not comprise the second frequency domain resource in the first frequency domain resource, and the third MCS is determined based on the first MCS.

The first downlink signal is a downlink signal sent by a network device carried on a first frequency domain resource to a terminal device in a first time period.

Specifically, the terminal device determines to receive a first downlink signal on the first frequency domain resource in a first time period according to the first signaling and the second signaling. Wherein the terminal device may determine according to the first signaling and the second signaling, including:

the terminal device may determine a first frequency domain resource and a first MCS according to the first signaling. I.e. the terminal device may determine the index value of the first frequency domain resource and the first MCS from the first signaling.

Alternatively, the terminal device may determine the second time period according to the first signaling. In particular, the terminal device may determine the first OFDM symbol and the last OFDM symbol in the second period according to the slot offset and the SLIV in the first signaling. The second time period includes the first time period.

Alternatively, the terminal device may determine the first time period according to the second signaling. The terminal device may determine a first OFDM symbol and a last OFDM symbol in the first period according to the slot offset and the SLIV in the second signaling.

The terminal device may determine the second MCS according to the second signaling, and specifically, the terminal device may determine an index value of the second MCS according to the second signaling and determine the second MCS according to an MCS index table indicated by the higher layer signaling. The modulation and coding strategy indicated by the second MCS is a modulation and coding strategy employed by the first downlink signal carried on the second frequency domain resource in the first time period.

The terminal device may determine the second frequency domain resource and the third frequency domain resource according to the first signaling and the second signaling. The second frequency domain resource is included in the first frequency domain resource. The third frequency domain resource is a frequency domain resource that does not include the second frequency domain resource in the first frequency domain resource. That is, the terminal device may determine the second frequency domain resource according to the second signaling, and since the third frequency domain resource is a complement of the second frequency domain resource in the first frequency domain resource, the terminal device may determine the third frequency domain resource as well. As shown in fig. 3, the first frequency domain resource contains 20 RBs, numbered RB0 to RB19, the second frequency domain resource contains RBs 0 to RB3 and RBs 14 to RB19, and the third frequency domain resource contains RBs 4 to RB13.

It should be understood that the number of resource blocks of the second frequency domain resource and the third frequency domain resource may be determined by the network device according to a parameter reported by the terminal device or according to an uplink reference signal sent by the terminal device, etc., and the number of resource blocks of the second frequency domain resource and the third frequency domain resource in fig. 3 is merely an example, and is not limited in any way.

Alternatively, the terminal device may determine the third MCS according to the first MCS. It can also be said that the terminal device can determine the third MCS from the first signaling and/or the second signaling. Specifically, the terminal device may determine a first MCS offset value according to the second signaling, and the terminal device may determine an index value of a third MCS according to the index value of the first MCS and the first MCS offset value, and determine the third MCS through an MCS index table indicated by the higher layer signaling.

In one embodiment, the terminal device may determine the third MCS by determining the first MCS offset value according to indication information for indicating the first MCS offset value in the received second signaling. For example, when the MCS index value corresponding to the first MCS is I and when the first deviation value MCS is 0, the third MCS index value is I; when the first MCS offset value is 1, the third MCS index value is I+1; when the first MCS deviation value is-1, the third MCS index value is I-1; when the first deviation value is 2, the third MCS index value is I+2; when the first MCS offset value is-2, the third MCS index value is I-2.

And the terminal equipment can determine that the MCS corresponding to the third frequency domain resource in the first time period is the first MCS or the third MCS according to the first signaling and the second signaling.

And the terminal equipment can determine the MCS corresponding to the second frequency domain resource in the first time period as a second MCS according to the second signaling.

Optionally, the manner in which the network device schedules the terminal device to receive the downlink signal may include the following two manners:

a first possible way is:

the first signaling scheduling terminal equipment receives the downlink signal. Both the first signaling and the second signaling received by the terminal device may be carried in the PDCCH.

In an embodiment, the first signaling includes fourth indication information, which indicates that the terminal device receives the downlink signal in the second period of time, that is, the first signaling may schedule the terminal device to receive the downlink signal sent by the network device, where the downlink signal is the second downlink signal. The second downlink signal is a downlink signal carried in the first frequency domain resource in the second time period. The portion of the second downlink signal carried in the first period is the first downlink signal, wherein the second period includes the first period. The terminal receives the downlink signal according to the first signaling and the second signaling, and the specific steps include:

The terminal device determines the first frequency domain resource and the first MCS according to the first signaling, and the terminal device may also determine the second time period according to the first signaling.

And S2312, the terminal equipment receives a second downlink signal carried on the first frequency domain resource in a second time period according to the first signaling.

The terminal device determines to receive a first downlink signal on the first frequency domain resource in a first time period according to the first signaling and the second signaling S2313.

Specifically, in a first time period after the terminal device receives the first signaling and the second signaling, a first downlink signal is received on the second frequency domain resource and the third frequency domain resource, a part of the first downlink signal, which is carried on the second frequency domain resource, is processed through a modulation and coding strategy indicated by the second MCS, and a part of the first downlink signal, which is carried on the third frequency domain resource, is processed through a modulation and coding strategy indicated by the third MCS or a modulation and coding strategy indicated by the first MCS. It should be understood that, when the first MCS offset value indicated by the second signaling is 0 or the second signaling does not include the indication information of the first MCS offset value or the second signaling does not include the indication information of the third MCS, the portion of the first downlink signal carried on the third frequency domain resource is still processed through the modulation and coding strategy indicated by the first MCS; when the first MCS deviation value indicated by the second signaling is not 0 or the second signaling includes indication information for indicating the third MCS, the terminal device processes the portion of the first downlink signal carried on the third frequency domain resource through the modulation and coding strategy indicated by the third MCS.

It should be understood that the sequence of receiving the partial signal on the second frequency domain resource and the partial signal on the third frequency domain resource by the terminal device may be that the partial signal is received before the partial signal is received on the third frequency domain resource, or that the partial signal is received before the partial signal is received on the second frequency domain resource, or that the partial signal is received simultaneously, which is not limited herein.

As illustrated in fig. 4, the terminal device receives a first signaling and a second signaling in a time slot i, where the first signaling indicates that the second time period includes 20 time slots, i.e., time slot i to time slot i+19, the second signaling indicates that the first time period includes 5 time slots, i.e., time slot i to time slot i+4, the terminal device receives a part of signals in the first downlink signal in a second frequency domain resource and demodulates the part of signals according to the second MCS, receives a part of signals in the first downlink signal in a third frequency domain resource and demodulates the part of signals according to the first MCS or the third MCS; in time slot i+5 through time slot i+19, the terminal device receives the signal on the first frequency domain resource and demodulates the signal according to the first MCS.

It should be understood that if the terminal device receives a certain time slot after the first signaling and the second signaling, and when the first period of time has ended and the second period of time has not ended, the terminal device receives the second signaling again, the above steps after the terminal device receives the second signaling are repeated. If the terminal equipment receives a certain time slot after the first signaling and the second signaling, and the first time period is finished, and the terminal equipment does not receive the second signaling any more when the second time period is not finished, the terminal equipment receives a second downlink signal from the first frequency domain resource in a time period of dividing the second time period by the first time period, and demodulates the second downlink signal according to the first MCS.

It should also be understood that if the terminal device receives only the first signaling and does not receive the second signaling, the terminal device determines a first frequency domain resource and a first MCS according to the first signaling, then receives a second downlink signal from the first frequency domain resource in a second period of time, and processes the second downlink signal according to the first MCS.

The first signaling and the second signaling may be the same information or may be different information, and the DCI is exemplified by the first signaling and the second signaling may be the same DCI or may be different DCI, which is not limited herein.

A second possible way is:

and the second signaling scheduling terminal equipment receives the downlink signal. The first signaling received by the terminal device may be carried in PDSCH, and the second signaling may be carried in PDCCH.

Specifically, the second signaling scheduling terminal device receives a downlink signal sent by the network device, where the downlink signal is the first downlink signal. The first downlink signal is a downlink signal carried in a first frequency domain resource in a first time period. I.e. the second signaling instructs the terminal device to receive the first downlink signal.

Optionally, the first signaling further includes fourth indication information for indicating a second time period, the second time period including the first time period. It should be understood that the first signaling may not include fourth indication information indicating the second time period, i.e., when the first signaling includes the fourth indication information, the terminal device may determine the first frequency domain resource and the first MCS according to the first signaling in the second time period; when the first signaling does not include the fourth indication information, the terminal device may determine the first frequency domain resource and the first MCS according to the first signaling before receiving the next first signaling.

The terminal equipment receives the downlink signal according to the first signaling and the second signaling, and the specific steps are as follows:

s2321, the terminal equipment determines the first frequency domain resource and the first MCS according to the first signaling.

Optionally, the terminal device may further determine the second time period according to the first signaling. It should be understood that the terminal device may not perform this operation when the first signaling transmitted by the network device does not include fourth indication information for indicating the second period of time.

The step of S2322 of the terminal device determining to receive the first downlink signal on the first frequency domain resource in the first period according to the first signaling and the second signaling, specifically, the step of receiving the first downlink signal is the same as step S2313, which is not described herein.

It should be understood that if the first signaling received by the terminal device is used to indicate a second time period in addition to the first frequency domain resource and the first MCS, the terminal device does not receive the downlink signal for a time other than the first time period in the second time period after determining that the first downlink signal is received on the first frequency domain resource in the first time period according to the first signaling information and the second signaling. That is, when the terminal device receives only the first signaling, it does not receive the first downlink signal, and only needs to determine the first frequency domain resource and the first MCS.

After receiving the second signaling, the terminal device performs the operation of step S2322.

Alternatively, the first signaling may be RRC, and the second signaling may be on DCI, which is given here by way of example and not limitation.

It should be appreciated that, if the first signaling is RRC, since the existing RRC signaling has no field indicating the frequency domain resource and the MCS index value, the field indicating the frequency domain resource and the MCS index value may be implemented by newly adding a field in the RRC.

Specifically, the network device indicates the index value of the first MCS according to the MCS indication field in the RRC, and indicates the MCS index table adopted by the terminal device through the higher layer signaling, and the terminal device may determine the first MCS in the MCS index table indicated by the network device according to the index value of the first MCS, and determine the second time period through a field newly added in the RRC signaling for indicating the second time period.

According to the scheme of the embodiment, the first signaling and the second signaling are configured, so that the multi-MCS configuration of the corresponding single transmission block on the frequency domain resource scheduled by the network equipment is realized, and the frequency selective fading characteristic of the wireless channel is relieved.

It should be understood that the sequence numbers of the above processes do not mean the order of execution, and the execution order of the processes should be determined by the functions and internal logic of the processes, and should not constitute any limitation on the implementation process of the embodiments of the present application.

The above communication method mainly introduces the scheme provided by the embodiment of the application from the interaction point of view. It will be appreciated that each network element, e.g. a terminal device or a network device, for implementing the above-mentioned functions, comprises corresponding hardware structures and/or software modules for performing the respective functions. Those of skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The embodiment of the application may divide the function modules of the transmitting end device or the receiving end device according to the above method example, for example, each function module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated modules described above may be implemented either in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation. The following description will be given by taking an example of dividing each function module into corresponding functions.

The method provided in the embodiment of the present application is described in detail above with reference to fig. 1 to 4 and table 1. The following describes in detail the apparatus provided in the embodiments of the present application with reference to fig. 5 to 7. It should be understood that the descriptions of apparatus embodiments and the descriptions of method embodiments correspond to each other.

Fig. 5 is a schematic block diagram of a terminal device provided in an embodiment of the present application.

The terminal device 500 may correspond to the terminal device in the method 200 of the embodiment of the present application, and the terminal device 500 may comprise means for performing the method performed by the terminal device in the method 200 of fig. 2. And, each unit in the terminal device 500 and the other operations and/or functions described above are respectively for implementing the corresponding flow of the method 200 of fig. 2.

As shown in fig. 5, the terminal apparatus 500 may include a transceiving unit 510 and a processing unit 520. Wherein, the transceiver unit 510 is configured to receive a first signaling and a second signaling, where the first signaling includes first indication information for indicating a first frequency domain resource and a first MCS, and the first frequency domain resource includes a second frequency domain resource; the second signaling includes second indication information for indicating the second frequency domain resource and a second MCS; the processing unit 520 is configured to determine, according to the first signaling and the second signaling, to receive a first downlink signal on the first frequency domain resource in a first period, where an MCS corresponding to a portion of the first downlink signal that is carried on the second frequency domain resource is the second MCS, an MCS corresponding to a portion of the first downlink signal that is carried on a third frequency domain resource is the first MCS or a third MCS, and the third frequency domain resource is a frequency domain resource that does not include the second frequency domain resource in the first frequency domain resource, and the third MCS is determined according to the first MCS.

Optionally, the third MCS is determined according to the first MCS and a first MCS offset value, the first MCS offset value being carried in the second signaling.

Optionally, the first signaling is further configured to indicate that the second downlink signal is received in a second time period, and the second signaling further includes third indication information for indicating the first time period; the second time period includes the first time period, and the signal carried by the second downlink signal in the first time period is the first downlink signal.

Optionally, the first signaling further includes fourth indication information for indicating a second time period, the second time period including the first time period; the second signaling is also used to indicate that the first downlink signal was received within the first time period.

Optionally, the first signaling is carried in PDSCH, and the second signaling is carried in PDCCH.

Optionally, the first signaling and the second signaling are both carried in PDCCH.

It should also be appreciated that the transceiver unit 510 in the terminal device 500 may correspond to the transceiver 730 in the terminal device 700 shown in fig. 7, and the processing unit 520 in the terminal device 500 may correspond to the processor 710 in the terminal device 700 shown in fig. 7.

It should also be appreciated that the transceiver unit 510 in the terminal device 500 may be implemented via a communication interface (e.g., a transceiver or an input/output interface), for example, may correspond to the transceiver 730 in the terminal device 700 shown in fig. 7, the processing unit 520 in the terminal device 500 may be implemented via at least one processor, for example, may correspond to the processor 710 in the terminal device 700 shown in fig. 7, and the processing unit 520 in the terminal device 500 may also be implemented via at least one logic circuit.

Optionally, the terminal device 500 may further include a storage unit, where the storage unit may be configured to store instructions or data, and the processing unit may invoke the instructions or data stored in the storage unit to implement the corresponding operation.

It should be understood that the beneficial effects of the above device may be referred to the description in the above method embodiments, and for brevity, they are not described herein again.

Fig. 6 is a schematic block diagram of a network device provided in an embodiment of the present application.

It should be understood that the network device 600 may correspond to the network device in the method 200 of the embodiment of the present application, and the network device 600 may include a unit for performing the method performed by the network device in the method 200 of fig. 2. And, each element in the network device 600 and the other operations and/or functions described above are respectively for implementing the corresponding flow of the method 200 in fig. 2.

As shown in fig. 6, the network apparatus 600 may include a transceiving unit 610 and a processing unit 620. Wherein the transceiver unit 610 is configured to send a first signaling and a second signaling, where the first signaling includes first indication information for indicating a first frequency domain resource and a first MCS, and the first frequency domain resource includes a second frequency domain resource; the second signaling includes second indication information for indicating the second frequency domain resource and a second MCS; the processing unit 620 is configured to determine, according to the first signaling and the second signaling, to receive a first downlink signal on the first frequency domain resource in a first period, where an MCS corresponding to a portion of the first downlink signal that is carried on the second frequency domain resource is the second MCS, an MCS corresponding to a portion of the first downlink signal that is carried on a third frequency domain resource is the first MCS or a third MCS, and the third frequency domain resource is a frequency domain resource that does not include the second frequency domain resource in the first frequency domain resource, and the third MCS is determined according to the first MCS.

Optionally, the first signaling and the second signaling are carried in PDCCH.

It should also be appreciated that the transceiver unit 610 in the network device 600 may correspond to the transceiver 830 in the network device 800 shown in fig. 8, and the processing unit 620 in the network device 600 may correspond to the processor 810 in the network device 800 shown in fig. 8.

Optionally, the network device 600 may further include a storage unit, where the storage unit may be used to store instructions or data, and the processing unit may invoke the instructions or data stored in the storage unit to implement the corresponding operation.

It should also be appreciated that the transceiver unit 610 in the network device 600 may be implemented through a communication interface (e.g., a transceiver or an input/output interface), for example, may correspond to the transceiver 830 in the network device 800 shown in fig. 8, the processing unit 620 in the network device 600 may be implemented through at least one processor, for example, may correspond to the processor 810 in the network device 800 shown in fig. 8, and the processing unit 620 in the network device 600 may be implemented through at least one logic circuit.

Fig. 7 is a schematic structural diagram of a terminal device 700 provided in an embodiment of the present application. The terminal device 700 may be applied in a system as shown in fig. 1, and perform the functions of the terminal device in the above-described method embodiment. As shown, the terminal device 700 includes a processor 710 and a transceiver 730. Optionally, the terminal device 700 further comprises a memory 720. Wherein the processor 710, the transceiver 730 and the memory 720 can communicate with each other through an internal connection path to transfer control and/or data signals, the memory 720 is used for storing a computer program, and the processor 710 is used for calling and running the computer program from the memory 720 to control the transceiver 730 to transmit and receive signals. Optionally, the terminal device 700 may further include an antenna for sending uplink data or uplink control signaling output by the transceiver 730 through a wireless signal.

The processor 710 and the memory 720 may be combined into a single processing device, and the processor 710 is configured to execute the program codes stored in the memory 720 to implement the functions. In particular implementations, the memory 720 may also be integrated into the processor 710 or separate from the processor 710. The processor 710 may correspond to the processing unit in fig. 5.

The transceiver 730 may correspond to the transceiver unit in fig. 5. The transceiver 730 may include a receiver (or receiver, receiving circuitry) and a transmitter (or transmitter, transmitting circuitry). Wherein the receiver is for receiving signals and the transmitter is for transmitting signals.

It will be appreciated that the terminal device 700 shown in fig. 7 is capable of carrying out the various processes involving the terminal device in the method embodiment shown in fig. 2. The operations and/or functions of the respective modules in the terminal device 700 are respectively for implementing the corresponding flows in the above-described method embodiments. Reference is specifically made to the description in the above method embodiments, and detailed descriptions are omitted here as appropriate to avoid repetition.

The above-described processor 710 may be used to perform the actions described in the previous method embodiments as being performed internally by the terminal device, while the transceiver 730 may be used to perform the actions described in the previous method embodiments as being transmitted to or received from the network device by the terminal device. Please refer to the description of the foregoing method embodiments, and details are not repeated herein.

Optionally, the terminal device 700 may further include a power source for providing power to various devices or circuits in the terminal device.

Fig. 8 is a schematic structural diagram of a network device 800 according to an embodiment of the present application. The network device 800 may be applied in a system as shown in fig. 1 to perform the functions of the network device in the above-described method embodiment. As shown, the network device 800 includes a processor 810 and a transceiver 830. Optionally, the network device 800 further comprises a memory 820. Wherein the processor 810, the transceiver 830 and the memory 820 can communicate with each other through an internal connection path to transfer control and/or data signals, the memory 820 is used for storing a computer program, and the processor 810 is used for calling and running the computer program from the memory 820 to control the transceiver 830 to transmit and receive signals. Optionally, the network device 800 may further include an antenna for transmitting downlink data or downlink control signaling output by the transceiver 830 through a wireless signal.

The processor 810 and the memory 820 may be combined into one processing device, and the processor 810 is configured to execute program codes stored in the memory 820 to implement the functions. In particular implementations, the memory 820 may also be integrated within the processor 810 or separate from the processor 810. The processor 810 may correspond to the processing unit in fig. 6.

The transceiver 830 may correspond to the transceiver unit in fig. 6. The transceiver 830 may include a receiver (or receiver, receiving circuitry) and a transmitter (or transmitter, transmitting circuitry). Wherein the receiver is for receiving signals and the transmitter is for transmitting signals.

It should be appreciated that the network device 800 shown in fig. 8 is capable of implementing various processes involving the network device in the method embodiment shown in fig. 2. The operations and/or functions of the respective modules in the network device 800 are respectively for implementing the respective flows in the above-described method embodiments. Reference is specifically made to the description in the above method embodiments, and detailed descriptions are omitted here as appropriate to avoid repetition.

The above-described processor 810 may be used to perform the actions described in the previous method embodiments as being performed internally by the network device, while the transceiver 830 may be used to perform the actions described in the previous method embodiments as being transmitted to or received from the terminal device by the network device. Please refer to the description of the foregoing method embodiments, and details are not repeated herein.

Optionally, the network device 800 may further include a power source for providing power to various devices or circuits in the network device.

It should be understood that the network device 800 illustrated in fig. 8 is only one possible architecture of a network device and should not be construed as limiting the present application in any way. The method provided by the application can be applied to network devices of other architectures. For example, network devices including CUs, DUs, and AAUs, etc. The specific architecture of the network device is not limited in this application.

The embodiment of the application also provides a processing device, which comprises a processor and an interface; the processor is configured to perform the method of any of the method embodiments described above.

It should be understood that the processing means described above may be one or more chips. For example, the processing device may be a field programmable gate array (field programmable gate array, FPGA), an application specific integrated chip (application specific integrated circuit, ASIC), a system on chip (SoC), a central processing unit (central processor unit, CPU), a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), a microcontroller (micro controller unit, MCU), a programmable controller (programmable logic device, PLD) or other integrated chip.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method. To avoid repetition, a detailed description is not provided herein.

It should be noted that the processor in the embodiments of the present application may be an integrated circuit chip with signal processing capability. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, or discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

According to the method provided by the embodiment of the application, the application further provides a computer program product, which comprises: computer program code which, when run on a computer, causes the computer to perform the method of the embodiment shown in fig. 2.

According to the method provided in the embodiment of the present application, there is further provided a computer readable medium storing a program code, which when run on a computer, causes the computer to perform the method in the embodiment shown in fig. 2.

According to the method provided by the embodiment of the application, the application further provides a system, which comprises the one or more terminal devices and the one or more network devices.

The network device in the above-mentioned respective apparatus embodiments corresponds entirely to the network device or the terminal device in the terminal device and method embodiments, the respective steps are performed by respective modules or units, for example, the steps of receiving or transmitting in the method embodiments are performed by the communication unit (transceiver), and other steps than transmitting and receiving may be performed by the processing unit (processor). Reference may be made to corresponding method embodiments for the function of a specific unit. Wherein the processor may be one or more.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components may reside within a process and/or thread of execution and a component may be localized on one computer and/or distributed between 2 or more computers. Furthermore, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with one another in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

In the above-described embodiments, the functions of the respective functional units may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions (programs). When the computer program instructions (program) are loaded and executed on a computer, the result, in whole or in part, is the flow or function that is presented in accordance with an embodiment of the present application. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the respective implementation of the method of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present application should be covered in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims and the specification.

Claims

A method of communication, comprising:

receiving first signaling, wherein the first signaling comprises first indication information for indicating first frequency domain resources and a first Modulation and Coding Strategy (MCS);

receiving second signaling, wherein the second signaling comprises second indication information for indicating second frequency domain resources and second MCS, and the first frequency domain resources comprise the second frequency domain resources;

and determining to receive a first downlink signal on the first frequency domain resource in a first time period according to the first signaling and the second signaling, wherein the MCS corresponding to the part carried on the second frequency domain resource in the first downlink signal is the second MCS, the MCS corresponding to the part carried on a third frequency domain resource in the first downlink signal is the first MCS or the third MCS, the third frequency domain resource is a frequency domain resource which does not comprise the second frequency domain resource in the first frequency domain resource, and the third MCS is determined based on the first MCS.
The method of claim 1, wherein the third MCS is determined based on the first MCS and a first MCS offset value, the first MCS offset value being carried in the second signaling.
The method according to claim 1 or 2, wherein the first signaling is used for indicating that a second downlink signal is received in a second time period, and the second signaling further comprises third indication information for indicating the first time period;

the second time period includes the first time period, and the signal carried in the first time period by the second downlink signal is the first downlink signal.
The method according to claim 1 or 2, wherein the second signaling is used to indicate that the first downlink signal was received within the first time period.
The method of claim 4, wherein the first signaling further comprises fourth indication information for indicating a second time period, the second time period comprising the first time period.
The method according to any of claims 1 to 5, wherein the first signaling is carried in a physical downlink shared channel, PDSCH, and the second signaling is carried in a physical downlink control channel, PDCCH.
The method according to any of claims 1 to 5, wherein the first signaling and the second signaling are both carried in PDCCH.
A method of communication, comprising:

transmitting a first signaling, wherein the first signaling comprises first indication information for indicating a first frequency domain resource and a first MCS;

and sending a second signaling, where the second signaling includes second indication information for indicating a second frequency domain resource and a second MCS, the first frequency domain resource includes the second frequency domain resource, the second MCS is an MCS corresponding to a portion of the first downlink signal that is carried on the second frequency domain resource, an MCS corresponding to a portion of the first downlink signal that is carried on a third frequency domain resource is the first MCS or the third MCS, the third frequency domain resource is a frequency domain resource that does not include the second frequency domain resource in the first frequency domain resource, and the third MCS is determined based on the first MCS.
The method of claim 8, wherein the third MCS is determined based on the first MCS and a first MCS offset value, the first MCS offset value being carried in the second signaling.
The method according to claim 8 or 9, wherein the first signaling is used for indicating that a second downlink signal is received in a second time period, and the second signaling further comprises third indication information for indicating the first time period;

The second time period includes the first time period, and the signal carried in the first time period by the second downlink signal is the first downlink signal.
The method according to claim 8 or 9, wherein the second signaling is used to indicate that the first downlink signal was received within the first time period.
The method of claim 11, wherein the first signaling further comprises fourth indication information indicating a second time period, the second time period comprising the first time period.
The method according to any of claims 8 to 12, wherein the first signaling is carried in PDSCH and the second signaling is carried in PDCCH.
The method according to any of claims 8 to 12, wherein the first signaling and the second signaling are both carried in PDCCH.
A communication device, comprising:

a transceiver unit, configured to receive a first signaling, where the first signaling includes first indication information for indicating a first frequency domain resource and a first MCS;

the transceiver unit is further configured to receive a second signaling, where the second signaling includes second indication information for indicating a second frequency domain resource and a second MCS, and the first frequency domain resource includes the second frequency domain resource;

And the processing unit is configured to determine, according to the first signaling and the second signaling, to receive a first downlink signal on the first frequency domain resource in a first period, where an MCS corresponding to a portion of the first downlink signal that is carried on the second frequency domain resource is the second MCS, an MCS corresponding to a portion of the first downlink signal that is carried on a third frequency domain resource is the first MCS or the third MCS, and the third frequency domain resource is a frequency domain resource that does not include the second frequency domain resource in the first frequency domain resource, and the third MCS is determined based on the first MCS.
The apparatus of claim 15, wherein the third MCS is determined based on the first MCS and a first MCS offset value, the first MCS offset value being carried in the second signaling.
The apparatus according to claim 15 or 16, wherein the first signaling is configured to indicate that a second downlink signal is received within a second time period, and wherein the second signaling further includes third indication information configured to indicate the first time period;

the second time period includes the first time period, and the signal carried in the first time period by the second downlink signal is the first downlink signal.
The apparatus according to claim 15 or 16, wherein the second signaling is used to indicate that the first downlink signal was received within the first time period.
The apparatus of claim 18, wherein the first signaling further comprises fourth indication information indicating a second time period, the second time period comprising the first time period.
The apparatus according to any one of claims 15 to 19, wherein the first signaling is carried in PDSCH and the second signaling is carried in PDCCH.
The apparatus according to any of claims 15 to 19, wherein the first and second signaling are both carried in PDCCH.
A communication device, comprising:

a transceiver unit, configured to send a first signaling, where the first signaling includes first indication information for indicating a first frequency domain resource and a first MCS;

the transceiver unit is further configured to send a second signaling, where the second signaling includes second indication information for indicating a second frequency domain resource and a second MCS, where the first frequency domain resource includes the second frequency domain resource, the second MCS is an MCS corresponding to a portion of the first downlink signal that is carried on the second frequency domain resource, an MCS corresponding to a portion of the first downlink signal that is carried on a third frequency domain resource is the first MCS or the third MCS, and the third frequency domain resource is a frequency domain resource that does not include the second frequency domain resource in the first frequency domain resource, and the third MCS is determined based on the first MCS.
The apparatus of claim 22, wherein the third MCS is determined based on the first MCS and a first MCS offset value, the first MCS offset value being carried in the second signaling.
The apparatus according to claim 22 or 23, wherein the first signaling is configured to indicate that a second downlink signal is received within a second time period, and wherein the second signaling further includes third indication information configured to indicate the first time period;

the second time period includes the first time period, and the signal carried in the first time period by the second downlink signal is the first downlink signal.
The apparatus of claim 22 or 23, wherein the second signaling is used to indicate that the first downlink signal was received within the first time period.
The apparatus of claim 25, wherein the first signaling further comprises fourth indication information indicating a second time period, the second time period comprising the first time period.
The apparatus of any of claims 22-26, wherein the first signaling is carried in a PDSCH and the second signaling is carried in a PDCCH.
The apparatus according to any of claims 22 to 26, wherein the first and second signaling are both carried in PDCCH.
A communication device, comprising:

a memory for storing computer instructions;

a processor for executing computer instructions stored in the memory, to cause the communication device to perform the method of any one of claims 1 to 7 or to perform the method of any one of claims 8 to 14.
A computer readable storage medium, having stored thereon a computer program which, when executed by a communication device, causes the communication device to perform the method of any of claims 1 to 7 or to perform the method of any of claims 8 to 14.